课程名称︰普通化学丙
课程性质︰物治系 医技系 公卫系 职治系 护理系 药学系 大一必带
课程教师︰刘铭璋
开课学院：理学院
开课系所︰化学系
考试日期（年月日）︰10/04/2013
考试时限（分钟）：10 分钟
是否需发放奖励金：是
（如未明确表示，则不予发放）
试题 :
General Chemistry 10/04/2013
1. Which of the following statements is (are) true?
I . An excited atom can return to its ground state by absorbing
electromagnetic radiation.
II . The energy of an atom is increased when electromagnetic radiation is
emitted from it.
III. The energy of electromagnetic radiation increases as its frequency
increases.
IV . An electron in the n = 4 state in the hydrogen atom can go to the n = 2
state by emitting electromagnetic radiation at the appropriate
frequency.
V . The frequency and wavelength of electromagnetic radiation are inversely
proportional to each other.
(a) II, III, IV, (b) III, V, (c) I, II, III, (d) III, IV, V, (e) I, II, IV
○
2. Consider the following representation of a 2p-orbital: ○
Which of the following statements best describes the movement of electrons
in a p-orbital?
(a) The electrons move along the outer surface of the p-orbital, similar to
a "figure 8" type of movement.
(b) The electrons move within the two lobes of the p-orbital, but never
beyond the outside surface of the orbital.
(c) The electrons are concentrated at the center (node) of the two lobes.
(d) The electrons are only moving in one lobe at any given time.
(e) The electrons movement cannot be exactly determined.
3. Which of the following electron configurations is correct?
(a) 2 10 1
Ga: [Kr]4s 3d 4p
(b) 2 5
Mo: [Kr]5s 4d
(c) 1 10
Ca: [Ar]4s 3d
(d) 2 10 7
Br: [Kr]4s 3d 4p
(e) 2 4 10 3
Bi: [Xe]6s 4f 5d 6p
4. Which of the following statements is false?
(a) An orbital can accommodate at most two electrons.
(b) The electron density at a point is proportional to ψ2 at that point.
(c) The spin quantum number of an electron must be either + 1/2 or - 1/2.
(d) A 2p orbital is more penetrating than a 2s; i.e., it has a higher
electron density near the nucleus and inside the charge cloud of a 1s
orbital.
(e) In the usual order of filling, the 6s orbital is filled before the 4f
orbital.
5. Choose the element with the highest ionization energy.
(a) Na, (b) Mg, (c) Al, (d) P, (e) S